#nav {width:100%; float:left; height:48px; position:relative; z-index:500; line-height:48px;}
#nav li.top {display:block; float:left; height:48px;}
#nav li a.top_link {display:block;  float:left; height:48px; line-height:48px; color:#FFF; font-size:14px; padding:0 12px 0 12px; cursor:pointer;}
#nav li a.top_link span {float:left; display:block; padding:0 12px 0 12px; height:48px;}
#nav li a.top_link span.down {float:left; display:block; padding:0 12px 0 12px; height:48px;}
#nav li:hover a.top_link {color:#333; background: url(../Images/menu_hover_bg.gif) repeat-x;}
#nav li:hover a.top_link span {}
#nav li:hover a.top_link span.down {}
/* Default list styling */

#nav li:hover {position:relative; z-index:200;}

#nav li:hover ul.sub
{left:1px; top:49px; background: #F0F0F0; padding:3px 5px 4px 3px; border:1px solid #F0F0F0; white-space:nowrap; width:150%; height:auto; z-index:300;}
#nav li:hover ul.sub li
{display:block; height:40px; position:relative; float:left; width:100%; font-weight:normal; }
#nav li:hover ul.sub li a
{display:block; font-size:12px; height:40px; width:100%; line-height:40px; text-align:center; color:#333; text-decoration:none; border:1px solid #F0F0F0;}
#nav li ul.sub li a.fly
{background:#F9F9F9;}
#nav li:hover ul.sub li a:hover 
{background:#CCC; color:#FFF; border-color:#fff;}
#nav li:hover ul.sub li a.fly:hover
{background:#F9F9F9; color:#333;}

/*¹Ø¼ü*/
#nav li:hover ul.sub ul.sub{display:none;}
#nav li:hover ul.sub li:hover ul.sub{display:block;}

#nav li:hover li:hover ul,
#nav li:hover li:hover li:hover ul,
#nav li:hover li:hover li:hover li:hover ul,
#nav li:hover li:hover li:hover li:hover li:hover ul
{left:90px; top:-4px; background: #F0F0F0; padding:3px; border:1px solid #F0F0F0; white-space:nowrap; width:90px; z-index:400; height:auto;}

#nav ul, 
#nav li:hover ul ul,
#nav li:hover li:hover ul ul,
#nav li:hover li:hover li:hover ul ul,
#nav li:hover li:hover li:hover li:hover ul ul
{position:absolute; left:-9999px; top:-9999px; width:0; height:0; margin:0; padding:0; list-style:none;}

#nav li:hover li:hover a.fly,
#nav li:hover li:hover li:hover a.fly,
#nav li:hover li:hover li:hover li:hover a.fly,
#nav li:hover li:hover li:hover li:hover li:hover a.fly
{background:#F0F0F0; color:#fff; border-color:#F0F0F0;} 

#nav li:hover li:hover li a.fly,
#nav li:hover li:hover li:hover li a.fly,
#nav li:hover li:hover li:hover li:hover li a.fly
{background:#F0F0F0; color:#000; border-color:#F0F0F0;}